TWI407730B - 在行動網路使用識別符以避免碰撞之方法 - Google Patents
在行動網路使用識別符以避免碰撞之方法 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
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- H04W72/00—Local resource management
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/02—Hybrid access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
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- H—ELECTRICITY
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- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/18—Service support devices; Network management devices
- H04W88/182—Network node acting on behalf of an other network entity, e.g. proxy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W74/0833—Random access procedures, e.g. with 4-step access
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Description
本發明係關於一行動網路。具體而言,係關於一在一行動網路中之傳輸間避免碰撞的方法。
以寬頻分工多重存取系統(wideband code division multiple access,WCDMA)無線電存取技術為基礎的第三代行動電話合作伙伴計畫(third generation partnership project,3GPP)行動系統已被廣泛地在世界各地發展。作為WCDMA演進之第一步,一高速下鏈封包存取技術(high-speed downlink packet access,HSPDA)為3GPP提供高競爭力的無線電讀取技術。然而,由於無線存取技術不斷因使用者及供應商之需求與期待而發展,仍需要在3GPP中對新技術之演進以提高競爭力。
因此,為發展可顯著地降低成本並同時提供高品質服務之無線傳輸技術,已針對此目的而研究「演進UMTS無線電存取技術和UMTS地域無線電存取網路」(Evolved UTRA and UTRAN)。第三代行動網路(3G)的長期演進(long-term evolution,LTE)致力於為使用者及供應商降低成本,以及增進服務品質,並同時擴大的覆蓋範圍及改善系統容量。3G LTE需要降低每位元成本、增加服務可得性、彈性使用頻帶、簡單的結構及開放式介面、以及如一較高層需求般的一終端之適當功率消耗。
通常,一個胞中設置一個節點B(Node-B)。多個使用者設備(user equipment,UE)可定位在一個胞中。該使用者設備必須執行一隨機存取程序方能存取網路。
第1圖係一方塊圖,其用以說明一個通訊網路,例如一演進全球式行動電信系統(evolved universal mobile telecommunication system,E-UMTS)的網路結構。該E-UMTS亦可被稱為一LTE系統。該通訊網路已被廣泛設置以提供多種通訊服務,例如聲音以及封包資料。
如第1圖所說明,該E-UMTS包括一演進的UMTS地域無線電存取網路(evolved UMTS terrestrial radio access network,E-UTRAN)及一核心網路(core network,CN)。該E-UTRAN可包括一或更多演進的Node-B(evolved Node-B,eNode-B)20。該CN可包括一節點,其用以註冊一使用者設備(UE)10之使用者以及一或更多位於網路末端並連接到外部網路的E-UTRAN存取閘道(access gateway,AG)30。
如以下所使用的,「下鏈」係指自一eNode-B 20至UE 10之通訊;「上鏈」係指自用UE至eNode-B之通訊。「UE」係指使用者所攜帶之通訊設備,也可指為一行動台(mobile station,MS)、一使用者終端(user terimanl,UT)、一用戶站(subscriber station,SS)、或一無線裝置(wireless device)。
一eNode-B 20提供一使用者平面及一控制平面之末端給該UE 10。一AG 30提供一連線期間之末端以及為UE 10之行動管理功能。一eNode-B 20與一AG 30可經由一S1介面所連接。
一eNode-B 20通常為一固定的站台,用以與UE 10通訊,其也可被稱為一基地台(base station,BS)或一存取點(access point)。每個胞可配置一eNode-B 20。於eNode-B 20之間可使用一介面以傳輸使用者訊務(user traffic)或控制訊務(control traffic)。
一AG 30也可被稱為行動管理元件或使用者平面元件(mobility management entity/user plane eneity,MME/UPE)。一AG 30可被分類為一用以執行使用者訊務程序的部份與一用以執行控制訊務程序的部份。可在用以執行使用者訊務程序之AG 30與用以執行控制訊務程序之AG之間使用一新介面來執行新的通訊。
可使用一介面以區別E-UTRAN與CN。於一eNode-B 20與一AG 30之間可經由該S1介面以連結複數個節點。eNode-B 20之間可經由一X2介面互相連結,鄰近之eNode-B 20可隨時擁有一具有X2介面之網狀網路(meshed network)結構。
於UE 10及網路間之無線電介面協定(radio interface protocol)階層可根據通訊網路中廣為人知之開放式系統互連(open system interconnection,OSI)參考模型中之三個下層,而分類為第一層(L1)、第二層(L2)、以及第三層(L3)。屬於第一層之實體層提供使用實體通道的資訊傳送服務。屬於第三層的無線電資源控制(radio resource control,RRC)層為控制UE 10與網路間之無線電資源提供服務。該UE與網路經由RRC層交換一RRC信息。
該RRC層可被定位於一eNode-B 20或AG 30之一網路節點中。另一替代方法則是,該RRC層可被定位於一eNode-B 20或AG 30。
該無線電介面協定橫向地包括一實體層、一資料鏈結層與一網路層;縱向地包括一用以傳輸資料資訊之使用者平面及一用以傳輸控制信號之控制平面。第2圖係一方塊圖,用以說明該無線電介面協定之控制平面。第3圖係一方塊圖,用以說明該無線電介面協定之使用者平面。第2圖與第3圖係說明以一無線電存取網路標準為基礎之UE 10與E-UTRAN之間的無線電介面協定之結構。
如第2圖與第3圖所示,實體層使用一實體通道(physical channel)提供資訊傳送服務至上層(upper-level layer)。實體層經由一運輸通道(transport channel)連結至一媒體存取控制(medium access control,MAC)層,該MAC層為一上層。
資料係經該運輸通道於MAC層與實體層之間傳送。資料係於不同的實體層之間經由一實體通道傳輸,例如,在一發送器(transmitter)之實體層與一接收器(receiver)之實體層之間。
屬於第二層之該MAC層經由一邏輯通道(logical channel)提供服務至為上層的一無線電鏈路控制(radio link control,RLC)層。屬於第二層之RLC層支援可靠的資料傳輸。吾人應注意到圖中以虛線表示RLC層,因為,若該等RLC功能被實作於MAC層中且由MAC層所執行,則該RLC層本身可以不需要存在。
因網際網路協定(Internet Protocol,IP)封包標頭(packet header)包含不必要之控制資訊以及具有相對較大的尺寸,為降低網際網路協定封包標頭之大小,屬於第二層之封包資料融合協定(packet data convergence protocol,PDCP)層執行標頭壓縮功能。如此一來,當傳輸一IP封包時,像是一IPv4封包或一IPv6封包,則可促進在一具有窄頻寬之無線電區段中封包的有效傳輸。
屬於第三層之無線電資源控制(Radio Resource Control,RRC)層,係定義為僅於控制平面中。該RRC層能作為控制無線電載送(radio bearers)之邏輯通道、運輸通道、與實體通道的組態、重新組態與釋放之用。無線電載送係由供給資料傳輸於UE 10與E-UTRAN之間之第二層所提供的服務。
用於從該網路傳輸資料至UE 10之下鏈運輸通道包含一傳輸系統資訊的廣播通道(broadcast channel,BCH)以及一傳輸使用者流量或控制信息的下鏈共享通道(shared channel,SCH)與共享控制通道(shared control channel,SCCH)。一下鏈多播服務(downlink multicast service)或廣播服務(broadcast service)之流量或控制信息可經由下鏈SCH或一額外的多播通道(multicast channel,MCH)傳輸。
從UE 10傳輸資料至網路的上鏈運輸通道包括一傳輸開始控制信息之隨機存取通道(random access channel,RACH)以及一傳輸使用者流量或控制信息的上鏈共享通道(shared channel,SCH)與共享控制通道(shared control channel,SCCH)。在此將描述從UE 10傳輸開始控制信息至網路之隨機存取通道。
隨機存取程序係經由屬一上鏈運輸通道的隨機存取通道(random access channel,RACH)所執行。該使用者設備經由該RACH傳輸一開始控制信息至網路。該RACH係用來使該使用者終端設備與網路同步,並當該使用者設備需要傳輸資料但無法獲得傳輸資料之上鏈無線電資源時,用以獲得無線電資源。
經由該RACH,多於一個的使用者設備可嘗試獲得相同的無線電資源。當此情形發生時,多於一個的使用者設備可同時使用相同的無線電資源傳輸信息。該等信息可能互相碰撞,並可能造成傳輸失敗。
經過一段預設的時間後,信息傳輸失敗的使用者設備會再次使用RACH。資料傳輸時間會因碰撞而顯著地增加,並且可因再次存取造成無線電資源的浪費。
本發明之一目的係提供一種在行動網路中使用識別符,自使用者設備的傳輸中避免碰撞的方法。
本發明的一種態樣係提供於行動通訊系統中資訊傳播的一種方法。該方法包括經由一隨機存取通道(RACH)傳輸一前序碼、接收對於該前序碼的回應,該回應包含一識別符與一指示符,該識別符係根據前序碼產生、該指示符係對應至該識別符以及使用該識別符與指示符傳輸資料。
經過考量,該識別符包括以下其中之一:一隨機識別符(random Id)、一MAC識別符(MAC Id)、一胞無線電網路臨時識別符(cell-radio network temporary identity,C-RNTI)、與一封包臨時行動用戶識別符(packet-temporary mobile subscriber identity,P-TMSI)。更進一步地考量,該資料係傳輸於RRC信息、使用者資料、與上鏈控制資訊等其中之一中。
經過考量,該方法更包括接收對於該資料之一回應的步驟,其中該回應包括該識別符、該指示符、與一C-RNTI。更進一步考量,該回應係一RRS信息、使用者資料、與下鏈控制資訊等其中之一。
本發明的另一態樣係提供一種於行動通訊系統中溝通資訊的方法。該方法包括通過一隨機存取通道(RACH)接收一前序碼、產生一根據該前序碼的識別符、產生一對應至該識別符的指示符、傳輸對於該前序碼之一回應、該回應包括該識別符與該指示符以及接收使用該識別符及指示符傳輸的資料。
經過考量,該識別符係根據在前序碼中的一簽名(signature)與一RACH時機兩者其中之一所產生。更進一步考量,該識別符包括一隨機識別符(random Id)、一MAC識別符(MAC Id)、一胞無線電網路臨時識別符(C-RNTI)、以及一封包臨時行動用戶識別符(P-TMSI)等其中之一。
經過考量,該方法更包括於接收到的資料中使用該識別符及指示符以決定資料係自哪一個行動通訊終端機接收。更進一步考量,資料係接收自RRC信息、使用者資料、與上鏈控制資訊等其中之一。
經過考量,該方法更包括傳輸對於該資料之一回應,其包括該識別符、該指示符、與一C-RNTI。更進一步考量,該回應係於RRS信息、使用者資料、與下鏈控制資訊等其中之一中傳輸。
本發明的另一態樣係提供一種於行動通訊系統中傳播資訊的方法。該方法包括通過隨機存取通道(RACH)傳輸一前序碼的行動通訊終端、一根據前序碼產生識別符與產生係對應至識別符的指示符之網路,該網路傳輸對於該前序碼之一回應,該回應包括該識別符與該指示符以及使用該識別符與指示符傳輸資料的行動通訊終端。
經過考量,該網路根據至少前序碼中的簽名與RACH時機其中之一產生識別符。更進一步考量,該識別符包括一隨機識別符(random Id)、一MAC識別符(MAC Id)、一胞無線電網路臨時識別符(C-RNTI)、以及一封包臨時行動用戶識別符(P-TMSI)等其中之一。
經過考量,該方法更包括於接收到的資料中使用該識別符與該指示符的網路,以決定資料係自行動通訊終端接收。更進一步考量,行動通訊終端於RRC信息、使用者資料、與上鏈控制資訊等其中之一中傳輸資料。
經過考量,該方法更包括傳輸對該資料之一回應的網路,該回應包括該識別符、該指示符、與一C-RNTI。經過進一步考量,網路於RRS信息、使用者資料、與下鏈控制資訊等其中之一中傳輸回應。
本發明的額外特色與優勢將於以下的描述中提出,而部分將可從敘述中明顯看出,或是可從本發明的實行上所習得。吾人將可了解到本發明之先前敘述與以下詳述都僅作為示範與解釋,並如所主張者所提出的發明提供更多的解釋。
藉由以下具有與隨附圖式相關聯之具體實施例的詳盡說明,熟習此項技術者易於明瞭此等及其他具體實施例,本發明並不限於所揭示之特定具體實施例。
以下,將敘述與隨附圖式相關聯之本發明的具體實施例。在圖式中之相似參考數字代表遍及整個說明書裡的相似元件。
當一UE 10之開關被開啟後,它會嘗試經由RACH存取一新的胞。該UE 10與一下鏈通道同步自胞中接收系統資訊。
收到該系統資訊後,該UE 10須為了RRC連結而傳輸一存取請求信息(access request message)。然而,因該UE 10沒有與目前的網路同步,並且上鏈無線電資源沒有被保證,故使用該RACH。為使用該RACH以傳輸存取請求信息至網路,該UE 10請求無線電資源的配置。
eNode-B接收到無線電資源請求並且配置無線電資源至該UE 10。該UE接著使用配置到的無線電資源傳輸RRC存取信息至網路。
當一UE被RRC連結至該網路時,它接收到根據來自網路的該等無線電資源排程之無線電資源,並使用該無線電資源來傳輸資料至網路。當因為上鏈無線電資源被配置至一無資料可傳輸的UE而導致效率不佳,所以該UE之緩衝記憶體中無剩餘資料可傳輸時,則該網路不再配置上鏈無線電資源至該UE 10。
該UE 10的緩衝記憶體狀態係根據數個時期或發生的事件而被報告至網路。當沒有無線電資源的一UE 10之緩衝記憶體接收到新資料時,因為該UE沒有已配置的上鏈無線電資源,故該UE使用RACH。該UE 10請求配置必須使用該RACH以傳輸資料至網路的無線電資源。
WCDMA的RACH將會被說明。該RACH係用於上鏈方向中傳輸短長度(short-length)資料。
一RRC信息的一部份,例如一RRC連結請求信息(connection request message)、一胞更新信息(cell update message)、與一URA更新信息(URA update message),係經過該RACH所傳輸。一邏輯通道,例如一共用控制通道(common control channel,CCCH)、一專用控制通道(dedicated control channel,DCCH)、以及一專用流量通道(dedicated traffic channel,DTCH),可被映射至RACH。該RACH可被映射至一實體通道,例如實體隨機存取通道(physical random access channel,PRACH)。
第4圖為一展示一PRACH範例的概圖。如第4圖所示,為上鏈實體通道的PRACH可包括一前序碼部分與一信息部分。
該前序碼部分執行一功率斜坡函數(power ramping function)以調整被使用來運輸一信息之運輸功率,並執行一用於避免在從若干UE 10處的傳輸間產生碰撞之一函數。該信息部分執行用以傳輸發送自MAC層至實體通道的一MAC協定資料單元(protocol data unit,PDU)之函數。
該實體層選擇一存取時段與一簽名,並當UE 10之MAC層指示實體層傳輸PRACH時,於上鏈方向傳輸PRACH之前序碼部分。在長為1.33ms的存取時段間隔期間可傳輸前序碼部分。可在存取時槽的特定初始間隔期間由16個簽名中選出一簽名。
當該UE 10傳輸前序碼時,該eNode-B可經由下鏈實體通道,如擷取指示符通道(acquisition indicator channel,AICH),傳輸一回應信號。該eNode-B經由AICH傳輸包括一確認acknowledgement,ACK)回應或非確認(non-acknowledgement,NACK)回應之回應信號至該UE 10。當接收到ACK時,該UE 10傳輸該信息部分。當收到ACK並於預定時間過後,該UE 10之MAC層指示該UE之實體層傳輸PRACH。
當它在一指定的存取時段後沒有接收到任何對應於該已傳輸的前序碼的回應信號時,該UE 10使用較先前的前序碼高一級別的功率來傳輸一新的前序碼。
除了RACH之前序碼之外,一資料運輸信號或一控制信號可自該eNode-B被傳輸至該UE 10。自eNode-B傳輸至UE之控制信號包括於RACH之前序碼部分傳輸上的下鏈排程資訊、上鏈排程授與、以及回應資訊。
於上鏈或下鏈的方向中,一識別符被使用來避免於來自UE 10的眾傳輸中產生碰撞。eNode-B產生該識別符並傳輸該識別符至UE 10。該UE使用該識別符傳輸資料。
當該UE為避免於識別符之間碰撞而使用該識別符時,用來識別多個識別符之一指示符可被包括於其中。當UE傳輸資料或控制信號至eNode-B時,該識別符可被eNode-B使用以區別多個UE 10。該識別符之指示符可連同該識別符一併使用。
該eNode-B可使用該識別符以傳輸資料或控制信號至一特定的UE 10。該識別符之指示符可與該識別符共同被使用。當資料自該UE 10傳輸至該eNode-B時,可能需要該識別符。
以下將描述該識別符與該指示符。該識別符可為一隨機識別符(random Id)、一MAC識別符(MAC Id)、一胞無線電網路臨時識別符(C-RNTI)、或一封包臨時行動用戶識別符(P-TMSI)。
當使用RACH時,random Id與MAC Id可被使用。該random Id或該MAC Id可擁有與C-RNTI相同的長度。
舉例來說,該random Id、該MAC Id、與該C-RNTI皆可為10位元長。替代方案則是,只有該MAC Id與該C-RNTI可擁有相同的長度。
根據一傳輸時機與該UE所選擇之前序碼部分的簽名,該UE 10與該eNode-B可產生相同的random Id。舉例來說,當UE經由傳輸時機傳輸一次前序碼部分的簽名至eNode-B時,UE 10與eNode-B可從簽名的資訊與傳輸時機獲得相同的ramdom Id。該eNode-B經過系統資訊或呼叫信息(paging message)通知該UE 10其正獲得random Id資訊,例如於簽名上之資訊與其傳輸時機。
於eNode-B配置C-RNTI至該UE之前,MAC Id可為一用來識別於特定胞中之UE 10的識別符。MAC Id可自random Id獲得。
當random Id擁有與C-RNTI相同長度時,該random Id與MAC Id可完全相同。當random Id之長度短於C-RNTI時,一random Id可延伸MAC Id。該eNode-B通知UE 10如何經由系統資訊或呼叫信息從random Id處取得MAC Id。
該C-RNTI為用以識別於一胞中之UE 10的識別符,並由eNode-B所配置與/或解除配置(de-allocate)。當UE進入一新胞,該UE 10可自eNode-B接收到一新的C-RNTI。該MAC Id擁有與該C-RNTI相同的長度。P-TMSI係一用以識別於一CN中之UE 10的識別符,並由AG 30所配置與/或解除配置。
屬於該識別符之指示符區別多個識別符。該指示符區別多個使用於RACH中之識別符,例如random Id、MAC Id、與C-RNTI。當該random Id或MAC Id之長度與C-RNTI完全相同時,該指示符被用以防止識別符互相碰撞。
舉例來說,若MAC Id之長度與C-RNTI之長度完全相同,並且UE A於目前之胞中有一數值為1111 0000、長度為8位元之C-RNTI,則UE B使用RACH以存取該胞。除此以外,若該MAC Id係由random Id取得,並且該MAC Id亦擁有長度8位元與數值1111 0000,則該eNode-B嘗試使用該識別符以傳輸給前序碼部分之回應信息至UE B。
然而,因UE A亦使用其識別符以自eNode-B接收資訊,所以UE A可能會錯誤地接收到傳送至UE B的資訊。此外,因UE B在接收來自eNode-B的C-RNTI之前使用該MAC Id,所以當UE B使用其識別符傳輸特定的資訊至eNode-B時,該eNode-B可能無法決定該資訊是從UE A或UE B處所傳輸。
該指示符係用以區別random Id與MAC Id,random Id或MAC Id識別於RACH中的UE 10及用於在該胞中之eNode-B與CN之間通訊的C-RNTI或P-TMSI。舉例來說,當該指示符擁有一位元時,一”0”的數值可顯示random Id或MAC Id,而一”1”的數值可顯示C-RNTI或P-TMSI。
以下將描述已傳輸之識別符與指示符。第5圖說明下鏈排程資訊。如第5圖所示,該識別符與該識別符之該指示符已被含括在自eNode-B傳輸至UE 10之一控制信號的下鏈排程資訊中。
如第5圖所示,該eNode-B、該識別符與該指示符經由一DL-SCCH傳輸至該UE 10。當傳輸下一信息時,該UE 10可使用該指示符與該識別符傳輸資料或一控制信號至該eNode-B。
第6圖說明一上鏈排程授與。如第6圖所示,屬該識別符之識別符與指示符已被含括在一自eNode-傳輸至UE 10之控制信號的上鏈排程授與中。
如第6圖所示,該eNode-B經由一DL-SCCH或一DL-SCH傳輸上鏈排程授與資訊至UE 10。可分別通過DL-SCCH與DL-SCH傳輸擁有不同資訊之上鏈排程授與資訊。
該識別符與該識別符之該指示符經過DL-SCCH或DL-SCH傳輸至UE 10。為傳輸下一信息,該UE 10可使用該識別符與該指示符傳輸資料或控制信號至eNode-B。
第7圖為一流程圖,說明一種根據本發明的實施例以避免碰撞的方法。第7圖說明當UE 10使用RACH時,所使用的該識別符與該識別符之該指示符。
如第7圖所示,該UE 10使用所選擇之簽名與傳輸時機(S110)以傳輸前序碼部分至eNode-B。該eNode-B傳輸給前序碼部分之回應資訊至UE(S120)。
該回應資訊可包括一識別符,例如一MAC Id。該回應資訊更可包括一用以識別該識別符之指示符。
該eNode-B使用前序碼部分獲得一random Id並產生MAC Id。該eNode-B與該UE 10擁有相同的MAC Id。該eNode-B以系統資訊或呼叫資訊通知該UE 10其MAC Id產生之方法。
該UE 10接收用於前序碼部分之回應資訊,並使用含括在該回應資訊內之無線電資源配置資訊以及識別符,如MAC Id,與指示符傳輸資料(S130)。該資料可包括該識別符,如MAC Id,與用於識別該識別符之指示符。已傳輸的資料可為一RRC信息、使用者資料或上鏈控制資訊。
該eNode-B為已接收到的資料自UE 10傳輸回應資訊。該回應資訊可包括識別符,如MAC Id、用於識別該識別符的指示符、以及被胞中的UE 10所使用之一C-RNTI。該回應資訊可為一RRC信息、使用者資料、或下鏈控制資訊。
與在此所揭示之具體實施例相連結的所述方法步驟可藉由硬體、軟體、或其組合予以實現。該硬體可藉由一設計成能執行以上功能之一特殊應用積體電路(application specific integrated circuit,ASIC)、數位信號處理(digital signal processing,DSP)、可程式化邏輯裝置(programmable logic device,PLD)、場可程式閘陣列(field programmable gate array,FPGA)、處理器(processor)、控制器(controller)、微處理器(microprocessor)、其他電子單元(electronic unit)、或其組合來實作。一用於執行以上功能之模組可實作該軟體。該軟體可被儲存於一記憶體單元並以一處理器執行。該記憶體單元或處理器可採用各式對該領域中熟悉技術者而言所熟知之構件。
如以上所描述,根據本發明,其有可能藉由提供一種當該UE使用一RACH時有效率地使用一UE之識別符的方法以及一種當使用該識別符時用於使用一指示符的方法,以於傳輸或接收可靠的資料同時減少來自UE之眾傳輸間的碰撞。
在不悖離其精神或基本特色的情形下,本發明可以多種不同形式所具體實施,除非另外說明,吾人亦應當瞭解到以上所描述之實施例不被任何先前之詳細描述所限制,而是應如隨附的申請專利範圍中所定義般,於其精神與範圍內廣泛地解釋。因此,所有落入申請專利範圍界限內的變更與修改、或該等界限的均等物皆被包含於隨附之申請專利範圍中。
前述之具體實施例與優勢僅為示範性質,並不可被解釋作為限制本發明之用。本教示可立即被應用至其他種類的裝置中。本發明的描述意為說明,非為限制該主張之範圍。
對該領域中熟悉技藝者而言,許多替代、修改、與變化將會變得顯見。於申請專利範圍中,,手段加功能用語之意圖為涵蓋此處所描述如執行所述功能般的結構,且不僅是結構相同者,而且是相同結構者。
10...使用者裝備
20...eNode-B
30...AG
為提供進一步對本發明之了解、將附圖併入並且構成本說明書的一部份,其說明本發明的具體實施例並且在連同說明部分來解釋本發明原理。在不同圖式內由相同編號所對照的本發明特徵、元件與態樣,根據一或多個具體實施例,呈現出相同、等同或類似之特徵、元件或態樣。
第1圖為一說明一通訊網路之方塊圖。
第2圖為一說明一無線電介面協定的控制平面之方塊圖。
第3圖為一說明一無線電介面協定的使用者平面之方塊圖。
第4圖說明一實體隨機存取通道(physical random access channel,PRACH)的範例。
第5圖說明下鏈排程資訊(downlink scheduling information)。
第6圖說明一個上鏈排程授與(uplink scheduling grant)。
第7圖為根據本發明的實施例,說明一種避免碰撞的方法之流程圖。
Claims (9)
- 一種於一行動通訊系統中傳播資訊的方法,該方法包含以下步驟:通過一隨機存取通道(random access channel,RACH),從一使用者設備(UE)傳輸一前序碼至一行動台(BS),該前序碼係從複數個候選前序碼中隨機選出;在該UE處從該BS接收回應於該前序碼之一第一回應信,息,該第一回應信息包括:一媒體存取控制(medium access control,MAC)識別符(MAC Id)與一第一指示符,該第一指示符指示:該MAC Id係包括在內;從該UE傳輸包括該MAC Id與該第一指示符之資料至該BS;以及在該UE處從該BS接收回應於該資料之一第二回應信息,該第二回應信息包括:一UE識別符與一第二指示符,該第二指示符指示:該UE識別符係包括在內,其中該MAC Id係基於該前序碼,且該MAC Id係用於識別由該UE所傳輸的該前序碼,其中該UE識別符係用於在一細胞服務區中識別該UE,以及其中該MAC Id之一位元長度與該UE識別符之一位元長度相同。
- 如申請專利範圍第1項所述之方法,其中該資料係一無線電資源控制(radio resource control;RRC)信息、使用者資料或上鏈控制資訊。
- 如申請專利範圍第1項所述之方法,其中該第二回應信息係一RRC信息、使用者資料或下鏈控制資訊。
- 如申請專利範圍第1項所述之方法,其中該MAC Id之該位元長度為10位元。
- 一種於一行動通訊系統中傳播資訊的方法,該方法包含以下步驟:通過一隨機存取通道(random access channel,RACH),在一行動台(BS)處從一使用者設備(UE)接收一前序碼;從該BS傳輸回應於該前序碼之一第一回應信息至該UE,該第一回應信息包括:一媒體存取控制(medium access control,MAC)識別符(MAC Id)與一第一指示符,該第一指示符指示:該MAC Id係包括在內;在該BS處接收從該UE所傳輸之資料,該資料包括:該MAC Id與該第一指示符;以及從該BS傳輸回應於該所接收資料之一第二回應信息至該UE,該第二回應信息包括:一UE識別符與一 第二指示符,該第二指示符指示:該UE識別符係包括在內,其中該MAC Id係基於該前序碼所獲得,且該MAC Id係用於識別該前序碼,其中該UE識別符係由該BS所指定,且該UE識別符係用於在由該BS所服務的一細胞服務區中識別該UE,以及其中該MAC Id之一位元長度與該UE識別符之一位元長度相同。
- 如申請專利範圍第5項所述之方法,其中該資料係一無線電資源控制(radio resource control;RRC)信息、使用者資料或上鏈控制資訊。
- 如申請專利範圍第5項所述之方法,其中該第二回應信息係一RRC信息、使用者資料或下鏈控制資訊。
- 如申請專利範圍第5項所述之方法,其中該MAC Id之該位元長度為10位元。
- 一種於一行動通訊系統中傳播資訊的使用者設備(UE),該UE包含一處理器,該處理器經配置以:通過一隨機存取通道(random access channel, RACH),傳輸一前序碼至一行動台(BS),該前序碼係從複數個候選前序碼中隨機選出;從該BS接收回應於該前序碼之一第一回應信息,該第一回應信息包括:一媒體存取控制(medium access control,MAC)識別符(MAC Id)與一第一指示符,該第一指示符指示:該MAC Id係包括在內;傳輸包括該MAC Id與該第一指示符之資料至該BS;以及從該BS接收回應於該資料之一第二回應信息,該第二回應信息包括:一UE識別符與一第二指示符,該第二指示符指示:該UE識別符係包括在內,其中該MAC Id係基於該前序碼,且該MAC Id係用於識別由該UE所傳輸的該前序碼,其中該UE識別符係用於在一細胞服務區中識別該UE,以及其中該MAC Id之一位元大小與該UE識別符之一位元大小相同。
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TW096104539A TWI342702B (en) | 2006-02-07 | 2007-02-07 | Method for operating enhanced rlc entity and rnc entity for wcdma and system thereof |
TW096104518A TWI356623B (en) | 2006-02-07 | 2007-02-07 | Preamble retransmission method in mobile communica |
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TW096104539A TWI342702B (en) | 2006-02-07 | 2007-02-07 | Method for operating enhanced rlc entity and rnc entity for wcdma and system thereof |
TW096104518A TWI356623B (en) | 2006-02-07 | 2007-02-07 | Preamble retransmission method in mobile communica |
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